CN112321108B - Bin type sludge aerobic fermentation equipment - Google Patents
Bin type sludge aerobic fermentation equipment Download PDFInfo
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- CN112321108B CN112321108B CN202011406508.3A CN202011406508A CN112321108B CN 112321108 B CN112321108 B CN 112321108B CN 202011406508 A CN202011406508 A CN 202011406508A CN 112321108 B CN112321108 B CN 112321108B
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- 239000010802 sludge Substances 0.000 title claims abstract description 66
- 238000010564 aerobic fermentation Methods 0.000 title claims abstract description 19
- 230000004151 fermentation Effects 0.000 claims abstract description 180
- 238000000855 fermentation Methods 0.000 claims abstract description 179
- 238000003756 stirring Methods 0.000 claims abstract description 43
- 239000011229 interlayer Substances 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000005273 aeration Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010035148 Plague Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms with fixed axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
- B08B7/026—Using sound waves
- B08B7/028—Using ultrasounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of sludge fermentation equipment, and particularly relates to bin-type sludge aerobic fermentation equipment which comprises an outer fermentation bin, an inner fermentation bin, an interlayer, an air inlet pipe, an air outlet pipe and a temperature sensor, wherein the interlayer is formed between the outer fermentation bin and the inner fermentation bin, the air inlet pipe and the air outlet pipe are fixedly arranged on the outer fermentation bin, and the air inlet pipe and the air outlet pipe are respectively positioned at the top and the bottom of the side surface of the outer fermentation bin. This good oxygen fermentation equipment of storehouse formula mud through starting supersonic generator, makes ultrasonic vibration stick produce the ultrasonic wave, and the shock wave that the ultrasonic wave produced in the transmission process makes the inner wall in mud and the interior fermentation storehouse produce resonance to make the mud that adheres to on the inner wall of interior fermentation storehouse drop, and then reach the purpose of automatic clearance interior fermentation storehouse inner wall, compare in tradition and prior art, the clearance of interior fermentation storehouse inner wall is more efficient, convenient, simple, and can not cause the influence to the use of stirring mechanism in the interior fermentation storehouse, the energy consumption is lower.
Description
Technical Field
The invention relates to the technical field of sludge fermentation equipment, in particular to bin-type sludge aerobic fermentation equipment.
Background
The sludge contains nutrition necessary for the growth of crops, and the content of organic components is very high. The recycling process for the sludge is extremely complex, and the sludge aerobic fermentation is an effective technology for solving the problem of sludge treatment. The water-containing sludge is mixed with a certain amount of aerobic microorganisms, so that not only can the sludge be subjected to harmless treatment with high stability, but also organic substances generated after fermentation can be recycled.
Because mud has certain adhesion, the easy adhesion is on the inner wall in fermentation storehouse, and traditional storehouse type mud aerobic fermentation equipment is through opening fermentation storehouse, clear up the inner wall that the fermentation was cocked through the manual work, waste time and energy, among the prior art, clear up it through setting up the hanging board on the (mixing) shaft, but the rotation of wall scraper blade has improved the rotation resistance of rabbling mechanism in the fermentation storehouse, has reduced rabbling mechanism life, has improved the energy consumption.
In order to solve the problems, the application provides a bin type sludge aerobic fermentation device.
Disclosure of Invention
Object of the invention
In order to solve the technical problems in the background art, the invention provides a bin type sludge aerobic fermentation device which has the characteristics of automatically cleaning the inner wall of a fermentation bin and having lower energy consumption.
(II) technical scheme
In order to solve the technical problems, the invention provides bin-type sludge aerobic fermentation equipment which comprises an outer fermentation bin, an inner fermentation bin, an interlayer, an air inlet pipe, an air outlet pipe and a temperature sensor, wherein the interlayer is formed between the outer fermentation bin and the inner fermentation bin, the air inlet pipe and the air outlet pipe are fixedly arranged on the outer fermentation bin and are respectively positioned at the top and the bottom of the side surface of the outer fermentation bin, the air inlet pipe and the air outlet pipe are communicated with the interlayer, the temperature sensor is fixedly arranged on the outer fermentation bin, and a detection head at the end part of the temperature sensor extends into the interlayer;
the top of the outer fermentation bin is welded with a mounting frame, the top of the mounting frame is fixedly provided with a first motor, an output shaft of the first motor is fixedly sleeved with a main gear, the middle of the inner fermentation bin is movably sleeved with a stirring shaft, the top of the stirring shaft extends to the outside of the outer fermentation bin and is fixedly sleeved with a slave gear, and one end of the stirring shaft, which is positioned in the inner fermentation bin, is provided with stirring blades;
the top of the outer fermentation bin and the top of the outer side are respectively provided with a feed pipe and an exhaust pipe, and the feed pipe and the exhaust pipe extend into the inner fermentation bin;
the outer fermentation bin is fixedly provided with an ultrasonic vibration rod, an ultrasonic generator is connected with the ultrasonic vibration rod through a wire, and the vibration end of the ultrasonic vibration rod extends into the inner fermentation bin.
Preferably, the gas distribution pipe is fixedly sleeved on the stirring shaft, the rotary joint is movably assembled at the top of the stirring shaft, the air compressor is fixedly arranged at the top of the outer fermentation bin, the gas transmission end of the air compressor is fixedly connected with the connecting pipe, and one end of the connecting pipe is fixedly sleeved with the rotary joint.
Preferably, the bottom of outer fermentation storehouse is equipped with the discharging pipe, the bottom of discharging pipe is connected with defeated material mechanism, defeated material mechanism includes conveyer, second motor, conveying axle and carries the blade, the tip fixed mounting of conveyer has the second motor, fixedly connected with carries the axle on the output shaft of second motor, carry the movable cover of axle to be equipped with the conveying blade that is located inside the conveyer in conveyer inside.
Preferably, the outer edge of the master gear meshes with the outer edge of the slave gear.
Preferably, the bottom of the air distribution pipe is provided with aeration air nozzles in an equidistant array, and the aeration air nozzles are obliquely arranged.
Preferably, through holes are formed in the middle of the air distribution pipe and the middle of the stirring shaft, the through holes in the air distribution pipe are communicated with the through holes in the stirring shaft and the aeration air tap, and the through holes in the stirring shaft are communicated with the connecting pipe.
Preferably, the material conveying machine is arranged in an inclined manner with the height gradually decreasing from left to right, and the bottom of the right side of the material conveying machine is provided with an opening for discharging.
Preferably, a lower elastic supporting block is arranged between the conical end of the bottom of the inner fermentation bin and the inner wall of the outer fermentation bin, an upper elastic supporting block is arranged between the top of the inner fermentation bin and the inner wall of the upper cover, and an elastic supporting block is arranged between the outer side wall of the inner fermentation bin and the inner side wall of the outer fermentation bin and used for isolating vibration of the inner side and the outer side. The upper elastic supporting block is provided with an upper annular groove at the top of the inner fermentation bin, an annular supporting pad is clamped in the upper annular groove for sealing the upper part, the lower elastic supporting block is provided with a lower annular groove at the conical end of the bottom of the inner fermentation bin, an annular supporting pad is clamped in the lower annular groove for sealing the lower part, the upper annular groove and the lower annular groove are rigid parts for providing absolute support and protecting the annular supporting pad, and the annular supporting pad is directly contacted with an upper supporting surface and a lower supporting surface for providing support, sealing and vibration isolation.
Preferably, the top of the inner fermentation bin is in sleeved relation with the upper sealing cover of the inner fermentation bin, an annular inner inclined surface is designed at the port of the inner fermentation bin at the sleeved part, and an upper backing ring is matched and sleeved between the top of the inner fermentation bin and the upper sealing cover of the inner fermentation bin.
The technical scheme of the invention has the following beneficial technical effects:
1. this good oxygen fermentation equipment of storehouse formula mud through starting supersonic generator, makes ultrasonic vibration stick produce the ultrasonic wave, and the shock wave that the ultrasonic wave produced in the transmission process makes the inner wall in mud and the interior fermentation storehouse produce resonance to make the mud that adheres to on the inner wall of interior fermentation storehouse drop, and then reach the purpose of automatic clearance interior fermentation storehouse inner wall, compare in tradition and prior art, the clearance of interior fermentation storehouse inner wall is more efficient, convenient, simple, and can not cause the influence to the use of stirring mechanism in the interior fermentation storehouse, the energy consumption is lower.
2. According to the bin type sludge aerobic fermentation equipment, through the interlayer formed between the outer fermentation bin and the inner fermentation bin, high-temperature steam or cooling medium is filled into the interlayer through the air inlet pipe in the fermentation process, and the temperature sensor is matched, so that the sludge fermentation temperature of the inner fermentation bin is conveniently regulated and controlled, the use requirements of different fermentation temperatures of sludge are met, the adaptability is higher, and the improvement of the fermentation environment of the sludge is facilitated.
3. According to the bin-type sludge aerobic fermentation equipment, the air distribution pipe is arranged on the stirring shaft, and in the fermentation process, the air distribution pipe is driven to rotate through the rotation of the stirring shaft, so that the aeration uniformity can be improved, the fermentation effect is enhanced, and the fermentation period is shortened.
Drawings
Fig. 1 is a front view of the overall structure of the present invention.
Fig. 2 is one of the cross-sectional views of the overall structure of the present invention.
FIG. 3 is a cross-sectional view of the stirring shaft and gas distribution pipe structure of the present invention.
Fig. 4 is a block diagram of a control system of the present invention.
Fig. 5 is an enlarged view of the portion a in fig. 2.
Fig. 6 is an enlarged view of the portion B in fig. 2.
Fig. 7 is an enlarged view of the C part in fig. 2.
Fig. 8 is a second cross-sectional view of the overall structure of the present invention.
Fig. 9 is an enlarged view of the portion D in fig. 8.
Reference numerals:
1. an outer fermentation bin; 2. an inner fermentation bin; 3. an interlayer; 4. an air inlet pipe; 5. an air outlet pipe; 6. a temperature sensor; 7. a mounting frame; 8. a first motor; 9. a main gear; 10. a stirring shaft; 11. a slave gear; 12. stirring the leaves; 13. a feed pipe; 14. an exhaust pipe; 15. an ultrasonic vibration rod; 16. an ultrasonic generator; 17. an air distribution pipe; 18. a rotary joint; 19. an air compressor; 20. a connecting pipe; 21. a discharge pipe; 22. a material conveying machine; 23. a second motor; 24. a conveying shaft; 25. conveying blades; 26. a first electromagnetic valve; 27. a second electromagnetic valve; 28. the inner fermentation bin is covered by a sealing cover; 29. an inner inclined surface; 30. an upper backing ring; 31. a lower backing ring; 32. an upper ring groove; 33. a lower ring groove; 34. an annular support pad; 35. a bearing; 36. swing rod; 37. a side wheel; 38. a bump; 39. and (3) a torsion spring.
Detailed Description
The sludge aerobic fermentation is a harmless, volume-reducing and stabilizing comprehensive sludge treatment technology, which is also called an aerobic composting technology. The method utilizes the action of aerobic thermophilic bacteria and thermophilic bacteria to decompose organic matters in sludge to form a substance similar to humus soil. Heat is generated in the metabolic process, so that the temperature of the stacking layer can be raised to be higher than 55 ℃, pathogens, parasitic ova and viruses can be effectively killed, and the fertilizer composition of the sludge is improved. The utilization way of the sludge fermentation finished product mainly comprises the following steps: farmland utilization, forest land utilization, landscaping utilization, land restoration of abandoned mine sites, covering soil of refuse landfill sites and the like, and the agricultural sludge is limited to be agricultural due to the relationship between the agricultural sludge and a human food chain. The aerobic fermentation technology is focused by people with the characteristics of low investment and low operation cost, and has wide application range. The technical bottlenecks which plague the popularization and application of the sludge fermentation technology are that the sludge has complex components and is easy to cause heavy metal pollution and the like.
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1: referring to fig. 2, the present invention provides the following technical solutions: the bin type sludge aerobic fermentation equipment comprises an outer fermentation bin 1, an inner fermentation bin 2, an interlayer 3, an air inlet pipe 4, an air outlet pipe 5 and a temperature sensor 6.
As shown in fig. 1, the top parts of the front surfaces of the outer fermentation bin 1 and the inner fermentation bin 2 are provided with observation windows made of transparent glass materials, so that when sludge is fed, workers can observe the material level of the sludge conveniently.
The interlayer 3 is formed between the outer fermentation bin 1 and the inner fermentation bin 2, an air inlet pipe 4 and an air outlet pipe 5 are fixedly arranged on the outer fermentation bin 1, the air inlet pipe 4 and the air outlet pipe 5 are respectively positioned at the top and the bottom of the side face of the outer fermentation bin 1, and the air inlet pipe 4 and the air outlet pipe 5 are communicated with the interlayer 3.
In the sludge fermentation process in the implementation, high-temperature gas or liquid is filled into the interlayer 3 through the air inlet pipe 4, so that the sludge fermentation temperature in the inner fermentation bin 2 is increased, the purpose of improving the sludge fermentation effect and efficiency is further achieved, and the sludge needs to be cooled after high-temperature fermentation, so that a cooling medium is filled into the interlayer 3 through the air inlet pipe 4, and the purpose of cooling after sludge fermentation is further achieved.
The air outlet pipe 5 is used for discharging the gas or liquid medium in the interlayer 3.
The temperature sensor 6 is fixedly arranged on the outer fermentation bin 1, and a detection head at the end part of the temperature sensor 6 extends into the interlayer 3.
By arranging the temperature sensor 6, the heating or cooling temperature in the interlayer 3 is conveniently detected, so that the fermentation temperature in the inner fermentation bin 2 is conveniently regulated and controlled.
The top welding of outer fermentation storehouse 1 has mounting bracket 7, the top fixed mounting of mounting bracket 7 has first motor 8, fixed cover is equipped with master gear 9 on the output shaft of first motor 8, the middle part movable sleeve of interior fermentation storehouse 2 is equipped with (mixing) shaft 10, the top of (mixing) shaft 10 extends to the outside of outer fermentation storehouse 1 and is equipped with from gear 11 in fixed cover, and (mixing) shaft 10 is located and is equipped with stirring leaf 12 in the one end of interior fermentation storehouse 2.
The outer edge of the master gear 9 is engaged with the outer edge of the slave gear 11.
In this embodiment, the first motor 8 is started to drive the main gear 9 to rotate, and the stirring blade 12 on the stirring shaft 10 is driven to rotate by utilizing the meshing transmission of the main gear 9 and the auxiliary gear 11, so that the sludge can be stirred, and the fermentation efficiency of the sludge is improved.
The top of outer fermentation storehouse 1 and the top in outside are equipped with inlet pipe 13 and blast pipe 14 respectively, inlet pipe 13 and blast pipe 14 all extend to in the interior fermentation storehouse 2.
In this embodiment, the feeding pipe 13 and the exhaust pipe 14 are used for respectively filling sludge into the fermentation chamber 2 and exhausting waste gas generated by fermentation.
An ultrasonic vibration rod 15 is fixedly installed on the outer fermentation bin 1, an ultrasonic generator 16 is connected with the ultrasonic vibration rod 15 through a wire, and the vibration end of the ultrasonic vibration rod 15 extends into the inner fermentation bin 2.
In this embodiment, when sludge is discharged after fermentation is completed, the ultrasonic generator 16 is started to enable the tool end of the ultrasonic vibration rod 15 positioned in the inner fermentation chamber 2 to generate ultrasonic waves, and the ultrasonic waves generated in the transmission process are utilized to enable the sludge and the inner wall of the inner fermentation chamber 2 to generate resonance, so that the sludge adhered to the inner wall of the inner fermentation chamber 2 is fallen off, and the purpose of automatically cleaning the inner wall of the inner fermentation chamber 2 is achieved.
The gas distribution pipe 17 is fixedly sleeved on the stirring shaft 10, the rotary joint 18 is movably assembled at the top of the stirring shaft 10, the air compressor 19 is fixedly arranged at the top of the outer fermentation bin 1, the gas transmission end of the air compressor 19 is fixedly connected with the connecting pipe 20, and one end of the connecting pipe 20 is fixedly sleeved with the rotary joint 18.
The rotary joint 18 movably connects the connecting pipe 20 and the stirring shaft 10 together, so that the position of the connecting pipe 20 is kept unchanged when the stirring shaft 10 rotates.
The bottom of outer fermentation storehouse 1 is equipped with discharging pipe 21, the bottom of discharging pipe 21 is connected with conveying mechanism, conveying mechanism includes conveyer 22, second motor 23, conveying axle 24 and conveying blade 25, the tip fixed mounting of conveyer 22 has second motor 23, fixedly connected with conveying axle 24 on the output shaft of second motor 23, conveying axle 24 movable sleeve dress is inside conveyer 22, and is equipped with the conveying blade 25 that is located inside conveyer 22 on the conveying axle 24.
In the embodiment, the second motor 23 is started to drive the conveying blades 25 on the conveying shaft 24 to rotate, so that the sludge discharged from the inner fermentation bin 2 can be automatically conveyed, the purpose of discharging the sludge is achieved, and the discharging speed and the discharging amount of the sludge can be conveniently controlled by controlling the rotating speed and the opening and closing of the second motor 23.
It should be noted that, the feeder 22 is disposed in an inclined manner with a decreasing height from left to right, and an opening for discharging is formed at the bottom of the right side of the feeder 22.
By arranging the material conveyer 22 in an inclined manner with the descending height from left to right, the sludge in the material conveyer 22 can slide to one side of the opening at the bottom of the right side of the material conveyer 22 through self gravity, so that the sludge in the material conveyer 22 can be conveniently discharged.
As shown in fig. 3, the bottom of the air distribution pipe 17 is provided with aeration air nozzles in equidistant array, and the aeration air nozzles are obliquely arranged.
Through holes are formed in the middle of the air distribution pipe 17 and the middle of the stirring shaft 10, the through holes in the air distribution pipe 17 are communicated with the through holes in the stirring shaft 10 and the aeration air tap, and the through holes in the stirring shaft 10 are communicated with the connecting pipe 20.
In the implementation, the air distribution pipe 17 is arranged on the stirring shaft 10, and in the fermentation process, the rotation of the stirring shaft 10 drives the air distribution pipe 17 to rotate, so that the aeration uniformity of the aeration air tap can be improved, the sludge fermentation effect is enhanced, and the fermentation period of sludge is shortened.
On the basis of the scheme, in order to realize aeration into the closed inner fermentation bin 2, gas is required to be continuously input into the inner fermentation bin 2, and an output gas channel is further arranged at the top of the inner fermentation bin 2, such as an exhaust port at the top of the inner fermentation bin in fig. 2, so that a ventilation function is realized, and a filtering structure is arranged on a ventilation pipe.
The working principle and the using flow of the invention are as follows: firstly, filling sludge into an inner fermentation bin 2 through a feed pipe 13, and then, according to the fermentation temperature of the sludge, filling high-temperature gas into an interlayer 3 through an air inlet pipe 4 and then adjusting the temperature in the inner fermentation bin 2 under the detection of a temperature sensor 6; then, in the fermentation process, the first motor 8 is started to drive the main gear 9 to rotate, the stirring blades 12 and the air distribution pipe 17 on the stirring shaft 10 are driven to rotate by utilizing the meshing transmission of the main gear 9 and the auxiliary gear 11, the sludge is stirred, then the air compressor 19 is started, oxygen is injected into the through hole of the air distribution pipe 17 through the connecting pipe 20 and the through hole in the stirring shaft 10, and the oxygen is injected into the sludge through the aeration air tap at the bottom of the air distribution pipe 17; finally, after fermentation is completed, cooling medium is injected into the interlayer 3 to cool the sludge, then the ultrasonic generator 16 is started to enable the tool end of the ultrasonic vibration rod 15 positioned in the inner fermentation bin 2 to generate ultrasonic waves, and the ultrasonic waves generated in the transmission process are utilized to enable the sludge and the inner wall of the inner fermentation bin 2 to generate resonance, so that the sludge adhered to the inner wall of the inner fermentation bin 2 is shed, an electromagnetic valve on the discharge pipe 21 is opened, the second motor 23 is started to drive the conveying blades 25 on the conveying shaft 24 to rotate, and the sludge discharged from the inner fermentation bin 2 is automatically conveyed out.
Example 2: in addition to the above construction scheme of embodiment 1, a first electromagnetic valve 26 is further mounted on the connection pipe, and an exhaust pump and a second electromagnetic valve 27 are further mounted on the exhaust pipe, or the exhaust pipe is connected to the connection pipe. The two electromagnetic valves are controlled by the controller to be alternately opened and closed at a certain frequency, so that the positive and negative changes of aeration pressure in the bin are realized, the aeration effect is improved (the pressure of the air part at the top in the bin is increased or decreased, so that bubbles in liquid are compressed (the liquid cannot be compressed but the bubbles in the liquid can be compressed) and suddenly depressurized to be rapidly expanded, the expansion and the contraction are alternately carried out along with the change of the frequency, and finally the pressure is exploded at the air part at the top), and the output end of the controller simultaneously controls the alternating opening and closing of the two electromagnetic valves.
Example 3: in the installation of the device based on the embodiment 1 or 2, the inner fermentation chamber is provided with more rotating parts, so that the top of the inner fermentation chamber is in a sealing and sleeving relationship (sealing and sleeving) with the cylindrical section above the inner fermentation chamber, as shown in fig. 2. A supporting block is arranged between the conical end of the bottom of the inner fermentation bin and the inner wall of the outer fermentation bin, and a supporting block is arranged between the top of the inner fermentation bin and the inner wall of the upper cover. A supporting block is arranged between the outer side wall of the inner fermentation bin and the inner side wall of the outer fermentation bin. The elastic supporting blocks can isolate vibration. The specific structures of the upper and lower support blocks are shown in fig. 5 and 7, respectively, in which an annular support pad 34 is fitted in the upper ring groove 32 for sealing the upper portion, and in which an annular support pad 34 is fitted in the lower ring groove 33 for sealing the lower portion. The upper annular groove and the lower annular groove are rigid parts, can provide absolute support and protect annular supporting pads, and the annular supporting pads are in direct contact with the inner fermentation bin and the outer fermentation bin to provide support and seal, can isolate vibration, and prevent the problem of vibration attenuation and vibration effect reduction caused by excessive transmission of ultrasonic vibration capability to the outer fermentation bin. As shown in fig. 6, the top of the inner fermentation bin and the upper sealing cover of the inner fermentation bin are in a sleeved relationship, and an annular inner inclined surface 29 is designed at the port of the inner fermentation bin at the sleeved position, and a backing ring 30 is matched and arranged between the top of the inner fermentation bin and the upper sealing cover of the inner fermentation bin. The lower backing ring 31 is sleeved between the conical end of the bottom of the inner fermentation bin and the bin bottom supporting body, so that vibration can be isolated, and the problems of vibration weakening and vibration effect reduction caused by excessive transmission of ultrasonic vibration capability to the bin bottom supporting body are solved.
Example 4: when the technical scheme provided by the embodiments is applied, the problems of influencing the aeration effect and reducing the aeration efficiency due to the limited aeration range can be solved for the conditions of complex sludge components and poor air permeability and fluidity.
On the basis of the embodiment, as shown in fig. 8 and 9, on a stirring shaft below a gas distribution pipe, a rotatable swing rod 36 is sleeved through a bearing 35, a torsion spring is installed between the swing rod and the gas distribution pipe, the upper surface of the swing rod is approximately contacted with an aeration hole, the swing rod and the aeration hole deviate by a small angle under the action of the torsion spring, a side wheel is installed at the end part of the swing rod, a bump is installed at a corresponding position on the inner wall of an inner fermentation bin, and the side wheel 37 is contacted with the bump 38 to cause the rod to swing. Therefore, in the rotating process, the swing rod swings left and right relative to the air distribution pipe, and the surrounding disturbance of the aeration holes is improved so as to improve the aeration effect. The blocking relation is formed between the swing rod and the aeration hole, so that the local pressure of the aeration port is improved, and the aeration range is improved.
The scheme can also solve the problem of poor aeration uniformity caused by the uneven condition of low center and high periphery of the liquid level caused by centrifugal movement of the sludge due to rotation of the air distribution pipe and the stirring She Shanxiang.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. For example, the bottom sampling port is added and the top dosing port is added. (influence of the kind of the polluted sludge, the dosing mode during dehydration and the pretreatment method of the stockpiling, because the kinds and the contents of the easily decomposed organic matters are different). For example, when the water content of the sludge is lower than 30%, the capability of extracting nutrient substances from the water by microorganisms is reduced, the decomposition of organic matters is slow, when the water content is lower than 12% -15%, the activity of the microorganisms is almost stopped, the water loss is caused in the heating and ventilation process, and after sampling and detection, the water content is adjusted to 55% -60%, and the aerobic fermentation process can be carried out. The method for adjusting the water content comprises the steps of adding dry materials (conditioning agents), refluxing finished products, heat drying, airing and the like (when the water content exceeds 65%, water fills gaps among material particles, blocks air channels, greatly reduces the air content, and enables fermentation to be converted from an aerobic state to an anaerobic state, and the temperature to be rapidly reduced, so that an odorous intermediate product is formed). Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (4)
1. The bin type sludge aerobic fermentation equipment is characterized by comprising an outer fermentation bin (1), an inner fermentation bin (2), an interlayer (3), an air inlet pipe (4), an air outlet pipe (5) and a temperature sensor (6), wherein the interlayer (3) is formed between the outer fermentation bin (1) and the inner fermentation bin (2), the air inlet pipe (4) and the air outlet pipe (5) are fixedly arranged on the outer fermentation bin (1), the air inlet pipe (4) and the air outlet pipe (5) are respectively positioned at the top and the bottom of the side face of the outer fermentation bin (1), the air inlet pipe (4) and the air outlet pipe (5) are communicated with the interlayer (3), the temperature sensor (6) is fixedly arranged on the outer fermentation bin (1), and a detection head at the end part of the temperature sensor (6) extends into the interlayer (3); the top of the outer fermentation bin (1) is welded with a mounting frame (7), the top of the mounting frame (7) is fixedly provided with a first motor (8), an output shaft of the first motor (8) is fixedly sleeved with a main gear (9), the middle part of the inner fermentation bin (2) is movably sleeved with a stirring shaft (10), the top of the stirring shaft (10) extends to the outside of the outer fermentation bin (1) and is fixedly sleeved with a slave gear (11), and one end of the stirring shaft (10) positioned in the inner fermentation bin (2) is provided with stirring blades (12); the top of the outer fermentation bin (1) and the top of the outer side are respectively provided with a feed pipe (13) and an exhaust pipe (14), and the feed pipe (13) and the exhaust pipe (14) extend into the inner fermentation bin (2); an ultrasonic vibration rod (15) is fixedly arranged on the outer fermentation bin (1), an ultrasonic generator (16) is connected with the ultrasonic vibration rod (15) through a wire, and the vibration end of the ultrasonic vibration rod (15) extends into the inner fermentation bin (2); an output gas channel is arranged at the top of the inner fermentation bin (2), the ventilation function is realized by exhausting gas at the top of the inner fermentation bin, and a filtering structure is arranged on the output gas channel; the top of the inner fermentation bin is in sealing and sleeving connection with the cylindrical section at the upper part of the inner fermentation bin, a lower elastic supporting block is arranged between the conical end at the bottom of the inner fermentation bin and the inner wall of the outer fermentation bin, an upper elastic supporting block is arranged between the top of the inner fermentation bin and the inner wall of the upper cover, a supporting block is arranged between the outer side wall of the inner fermentation bin and the inner side wall of the outer fermentation bin, and the elastic supporting blocks can isolate vibration; the upper elastic supporting block is provided with an upper annular groove (32) at the top of the inner fermentation bin, an annular supporting pad (34) is clamped in the upper annular groove (32) for sealing the upper part, the lower elastic supporting block is provided with a lower annular groove (33) at the conical end at the bottom of the inner fermentation bin, the annular supporting pad (34) is clamped in the lower annular groove (33) for sealing the lower part, the upper annular groove and the lower annular groove are rigid components, so that the annular supporting pad can be absolutely supported and protected, and the annular supporting pad is directly contacted with the inner fermentation bin and the outer fermentation bin to provide support and seal, so that vibration can be isolated, and the problem of vibration attenuation and vibration effect reduction caused by excessive transmission of ultrasonic vibration capacity to the outer fermentation bin is prevented; the top of the inner fermentation bin is in sleeved relation with the upper sealing cover of the inner fermentation bin, an annular inner inclined plane (29) is designed at the port of the inner fermentation bin at the sleeved part, a backing ring (30) is matched and arranged between the top of the inner fermentation bin and the upper sealing cover of the inner fermentation bin, a lower backing ring (31) is sleeved between the conical end of the bottom of the inner fermentation bin and the bottom support body, vibration can be isolated, and the ultrasonic vibration can be prevented from being transmitted to the bottom support body too much to cause vibration attenuation and vibration effect reduction; an air distribution pipe (17) is fixedly sleeved on the stirring shaft (10), an aeration air tap of an equidistant array is arranged at the bottom of the air distribution pipe (17), and the aeration air tap is obliquely arranged; the middle parts of the air distribution pipe (17) and the stirring shaft (10) are respectively provided with a through hole, the through holes in the air distribution pipe (17) are communicated with the through holes in the stirring shaft (10) and the aeration air tap, and the through holes in the stirring shaft (10) are communicated with the connecting pipe (20); the top of the stirring shaft (10) is movably provided with a rotary joint (18), the top of the outer fermentation bin (1) is fixedly provided with an air compressor (19), the air delivery end of the air compressor (19) is fixedly connected with a connecting pipe (20), and one end of the connecting pipe (20) is fixedly sleeved with the rotary joint (18); the first electromagnetic valve (26) is arranged on the connecting pipe, the exhaust pump and the second electromagnetic valve (27) are arranged on the exhaust pipe, the two electromagnetic valves are controlled by the controller to be alternately opened and closed at a certain frequency, the positive and negative changes of aeration pressure in the bin are realized, the aeration effect is improved, the pressure of the air part at the top of the bin is increased or decreased, bubbles in liquid are compressed, the liquid cannot be compressed, but the bubbles in the liquid can be compressed and then suddenly depressurized to be rapidly expanded, expansion and contraction are alternately carried out along with the frequency changes, and finally the two electromagnetic valves are exploded at the top air part, and the output end of the controller simultaneously controls the alternate opening and closing of the two electromagnetic valves; a rotatable swing rod (36) is sleeved on a stirring shaft below the air distribution pipe through a bearing (35), a torsion spring is installed between the swing rod and the air distribution pipe, the upper surface of the swing rod is approximately contacted with an aeration hole, the swing rod and the aeration hole deviate from a small angle under the action of the torsion spring, a side wheel is installed at the end part of the swing rod, a bump is installed at the corresponding position on the inner wall of an inner fermentation bin, the side wheel (37) is contacted with the bump (38) to cause the swing rod, so that the swing rod swings left and right relative to the air distribution pipe in the rotating process, the surrounding disturbance of the aeration hole is improved to improve the aeration effect, a blocking relation is formed between the swing rod and the aeration hole, the local pressure of an aeration hole is improved, and the aeration range is improved.
2. The bin-type sludge aerobic fermentation device according to claim 1, wherein a discharging pipe (21) is arranged at the bottom of the outer fermentation bin (1), a material conveying mechanism is connected to the bottom of the discharging pipe (21), the material conveying mechanism comprises a material conveying machine (22), a second motor (23), a conveying shaft (24) and conveying blades (25), the second motor (23) is fixedly arranged at the end part of the material conveying machine (22), the conveying shaft (24) is fixedly connected to an output shaft of the second motor (23), the conveying shaft (24) is movably sleeved inside the material conveying machine (22), and the conveying blades (25) positioned inside the material conveying machine (22) are arranged on the conveying shaft (24).
3. The tank type sludge aerobic fermentation apparatus according to claim 1, wherein the outer edge of the main gear (9) is meshed with the outer edge of the secondary gear (11).
4. The bin-type sludge aerobic fermentation device according to claim 2, wherein the material conveyer (22) is arranged in an inclined manner with the height decreasing from left to right, and an opening for discharging is formed in the bottom of the right side of the material conveyer (22).
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